Question

When dissolved in 1000 g of water, which chemical compound will produce a solution with the greatest freezing point depression?

Answer 1

Freezing point depression is based on molality and the van't Hoff factor (basically, how many molecules it dissociates into). So a molecule that is highly soluble and ionizes into 5 or 6 molecules would have a high freezing point depression. But as for a specific one, I'm not exactly sure which. Maybe antifreeze?

Answer 2

5.0 g of sodium chloride (NaCl)
9.2 g of potassium chloride (KCl)
11 g of calcium fluoride (CaF2)
20 g of glucose (C6H12O6) forgot to put the answer choices. -.-

Answer 3

CaF2. Because it dissociates into 3 molecules (2 x F- and 1 x Ca2+).

Answer 4

ohhh, okay. :)